diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index 0ddc3554f1a4..f9cff033d0dc 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -339,12 +339,14 @@ static ssize_t v4l2_write(struct file *filp, const char __user *buf, static __poll_t v4l2_poll(struct file *filp, struct poll_table_struct *poll) { struct video_device *vdev = video_devdata(filp); - __poll_t res = EPOLLERR | EPOLLHUP; + __poll_t res = EPOLLERR | EPOLLHUP | EPOLLPRI; - if (!vdev->fops->poll) - return DEFAULT_POLLMASK; - if (video_is_registered(vdev)) - res = vdev->fops->poll(filp, poll); + if (video_is_registered(vdev)) { + if (!vdev->fops->poll) + res = DEFAULT_POLLMASK; + else + res = vdev->fops->poll(filp, poll); + } if (vdev->dev_debug & V4L2_DEV_DEBUG_POLL) dprintk("%s: poll: %08x\n", video_device_node_name(vdev), res);